β-NaYF4:Yb3+,Er3+　microrods　with　average　length　of　10　μm　and　diameter　of　2.5　μm　were　synthesized　through　hydrothermal　method.　Based　on　the　obtained　microrods,　transparent　and　flexible　film　with　upconversion　luminescence　property　was　prepared　through　inorganic-organic　composition　method　by　using　co-polymerization　product　of　isobornylmethacrylate　and　urethane　acrylate　as　the　polymer　substrate.　The　prepared　film　shows　excellent　optical　transmission　in　the　visible　region　with　average　transmission　of　81.3%　at　high　doping　concentration　(2　wt%)　of　β-NaYF4:Yb3+,Er3+　microrods.　By　directing　and　moving　NIR　laser　beam　toward　the　prepared　film　with　high　scanning　speed,　visible　light　is　effectively　emitted　and　various　images　are　able　to　display.